OZANARI DUNGEON Manga

Manga Summary:
(From JanimeS) This manga follows the adventures of a group of mercenaries: barbarian Moka (the main character), rogue Blueman, and mage Kirinman. Moka and her gang belong to a dark mercenary guild. Moka, being a barbarian, has great physical strength and, of course, she has no brain. Despite her very revealing suit, she is very innocent, pure and naive.
The story starts when a white master seeks to hire some mercenaries, and the guild refuses to help him since he has no money with him. So the dark guild master sends Moka, Bluman, and Kirinman to aid him. It's really not a great start but this is how everything begins.
The author's drawing dramatically improves after volume 5. The plot becomes much more refined as well. It can be considered a typical adventure story. However, this manga goes a little deeper than that.
After volume 10 or so, the plot becomes really profound and deep. Dragons are involved, and whole nations go to war. The scale becomes quite large.
Really enjoyable manga.